Multi-Layered Optical Storage Media Using Arranged Nano Particles

Abstract

Recently, general optical-storage-media's capacity reached a limiting point due to shorter wavelengths and higher numerical apertures. Therefore, we need to develop novel optical storage system. In this research, a multi-layered high-density optical storage media has been proposed. The media has nanostructures composed of 200-nm-diameter photosensitive particles. Each particle is used for digital recordable pits. Its optical shape signal is picked up with a polarization-interferometric nonlinear confocal microscope equipped with a high numerical aperture objective. In the disk proposed, no electronically produced reference signal is necessary for clock data recovery. So, no jitter occurs in the recovery through nonperiodic clock signal.

Keywords:

• nano-particle
• storage media
• jitter-free
• confocal microscope
• Michelson interferometer